255411578318257 has 2 divisors, whose sum is σ = 255411578318258. Its totient is φ = 255411578318256.

The previous prime is 255411578318147. The next prime is 255411578318353. The reversal of 255411578318257 is 752813875114552.

It is a happy number.

255411578318257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 255072872942001 + 338705376256 = 15971001^2 + 581984^2 .

It is a cyclic number.

It is not a de Polignac number, because 255411578318257 - 2¹⁵ = 255411578285489 is a prime.

It is not a weakly prime, because it can be changed into another prime (255411578318857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127705789159128 + 127705789159129.

It is an arithmetic number, because the mean of its divisors is an integer number (127705789159129).

Almost surely, 2^{255411578318257} is an apocalyptic number.

It is an amenable number.

255411578318257 is a deficient number, since it is larger than the sum of its proper divisors (1).

255411578318257 is an equidigital number, since it uses as much as digits as its factorization.

255411578318257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94080000, while the sum is 64.

The spelling of 255411578318257 in words is "two hundred fifty-five trillion, four hundred eleven billion, five hundred seventy-eight million, three hundred eighteen thousand, two hundred fifty-seven".